Various embodiments relate to systems and methods for simultaneously switching input image streams to output devices, while providing optional image processing functions on the image streams. Certain embodiments may enable multiple users/viewers to collaboratively control such systems and methods. Additionally, some embodiments may enable control by a set of computer input devices (e.g., keyboard and mouse) to switch between multiple computer systems, possibly by following the movement of a computer input device cursor, between virtual displays, as the cursor is controlled by the set of computer input devices.